A belt conveyor is an industrial bulk material handling equipment that takes the Conveyor Belt as the core for bearing and traction, and achieves continuous and circular operation by means of friction drive. It serves as the fundamental core equipment for efficient, low-cost and eco-friendly transshipment of bulk materials in mining, coal, cement, ports, metallurgy, chemical industry, thermal power and other industries worldwide. From fixed trough-type conventional conveying to customized systems including long-distance overland, steep inclination, closed tubular, mobile radial telescopic stacking and port ship loading, belt conveyors have evolved from a single conveying tool to an integrated bulk material handling solution.

ZOOMRY specializes in the R&D, manufacturing and EPC general contracting services of belt conveyors, and is one of the three core suppliers of long-distance overland belt conveyor systems in China. Its products are benchmarked against leading international brands, serving global customers with customized design, full-life cycle services and international-standard quality, helping users cut production costs, boost operational efficiency and reduce environmental impacts. It is a professional bulk material handling equipment service provider that combines the advantages of Chinese manufacturing with global delivery capacity.

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Ⅰ.Introduction to Belt Conveyors

Core Definition

A belt conveyor, also known as a conveyor, is a mechanical system that uses a conveyor belt as the component for bearing and traction of materials. It drives the closed-loop conveyor belt to circulate via the friction between the driving pulley and the conveyor belt, realizing the continuous and stable conveying of materials from the feeding end to the discharging end. Different from intermittent handling equipment, belt conveyors can operate continuously for 24 hours with large capacity, long-distance and low-loss conveying, making them the "artery equipment" of the bulk material industry.

Product Classification

In line with international CEMA standards and industrial applications, belt conveyors are mainly divided into the following types, covering ZOOMRY’s full product line:

1. Trough Belt Conveyor: The most commonly used model, where the idler set presses the conveyor belt into a trough shape to enhance loading capacity and prevent material scattering, suitable for horizontal/small-inclination conventional conveying.
2. Pipe Belt Conveyor: Also called tubular belt conveyor, six sets of idlers roll the conveyor belt into a hexagonal tubular shape for fully enclosed conveying, with a maximum turning angle of 110° (only 70° for conventional models), ideal for eco-friendly scenarios crossing residential areas, roads and tunnels.
3. Long-Distance Overland Belt Conveyor: Adapted to complex terrains such as mountainous and cross-sea areas, with a single-unit length of up to several kilometers, a core competitive model of ZOOMRY.
4. Mobile Radial Telescopic Stacker/Ship Loader: Movable, rotatable, telescopic and luffing, suitable for stacking and ship loading in ports and mines, with a 28% higher storage capacity than conventional equipment.
5. Mobile Hopper Feeder/Truck Unloader: Adapted to ports, mining areas and stockyards for rapid unloading and continuous feeding of trucks/loaders, with a maximum processing capacity of 3500TPH.
6. Mobile Grasshopper/Jump Conveyor: Portable and movable, suitable for short-distance transshipment and cascade use in construction sites and sand-gravel yards.

Product Advantages

• Efficiency Advantage: Continuous conveying, with a single-system capacity reaching thousands of tons per hour, far exceeding that of truck and loader transshipment.
• Cost Advantage: Low operation and maintenance cost as well as low energy consumption, reducing the comprehensive cost by more than 30% compared with dump truck transshipment.
• Environmental Protection Advantage: Enclosed conveying with low dust, low noise and low carbon emissions, complying with the global green production requirements.
• Adaptability: Customizable to adapt to extreme working conditions such as high temperature, corrosion, severe cold and complex terrains.

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Ⅱ.Working Principle of Belt Conveyors

Core Working Principle of General Belt Conveyors

The operation of belt conveyors is based on two core logics: friction drive + closed-loop circular bearing. The complete process is as follows:

1. Power Output: motor → Reducer → Coupling, converting high-speed power into low-speed high torque and transmitting it to the driving pulley.
2. Friction Drive: Static friction is generated between the surface of the driving pulley and the conveyor belt, overcoming the operating resistance of the conveyor belt, materials and idlers, and driving the conveyor belt to run at a constant speed.
3. Closed-Loop Circulation: The conveyor belt forms a closed loop around the driving pulley, bend pulley and tension pulley, running uninterruptedly.
4. Material Conveying: Materials fall evenly onto the conveyor belt from the feeding hopper, move synchronously with the conveyor belt, and complete unloading at the discharging end.
5. Return Support: The no-load conveyor belt returns to the feeding end supported by the return idlers, completing a full working cycle.

In short: Power drives the pulley → Friction drives the belt → Belt carries materials → Continuous directional conveying.

Working Principle of Pipe Belt Conveyors

The pipe belt conveyor is an upgraded version of the conventional model, with the core difference lying in conveyor belt forming and enclosed conveying:

• At the feeding section, the conveyor belt is gradually rolled into a hexagonal tubular shape by six sets of idlers, and materials are completely enclosed in the tube to eliminate material scattering, dust and rainwater infiltration.
• The turning capacity is greatly improved, with a maximum turning angle of 110°, allowing it to bypass buildings, roads and mountains without transfer, thus cutting civil engineering costs.
• The return section is also tubular, realizing full-process enclosed conveying and suitable for scenarios with high environmental protection requirements.

Working Principle of Mobile Stacker/Ship Loader

Taking ZOOMRY ZR-SF series radial telescopic stacker as an example, it integrates the integrated logic of machinery, hydraulics and electronic control:

1. Hydraulic Drive: The hydraulic power unit controls the lifting, rotation, telescopic movement and luffing of the machine body, adapting to different stacking heights, widths and ship types.
2. Telescopic Conveying: The hydraulic winch + steel wire rope drives the inner unit to telescope, with stable stroke and automatic locking within 0.01 seconds in case of power failure/rope breakage, safe and reliable.
3. Intelligent Control: PLC + HMI touch screen + remote control, supporting fully automatic stacking, reducing labor input and material segregation, pollution and compaction.
4. Mobile Chassis: Tire/track chassis for free site transfer, suitable for scenarios without fixed foundations such as ports, mines and stockyards.

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Ⅲ.Key Components of Belt Conveyors

Idlers and Idler Sets

Idlers are the core components supporting the conveyor belt, reducing operating resistance and ensuring stable belt operation, accounting for more than 70% of the total conveyor components.

• Functions: Support the conveyor belt in the carrying section and return section, prevent belt sagging and deviation; trough idlers enhance loading capacity, and impact idlers resist material impact.
• Common Types: Trough carrying idlers, transition idlers, impact idlers, return idlers, self-aligning idlers, friction self-aligning idlers.

ZOOMRY Technical Advantages

1. Radial Runout: ≤0.4mm for idlers with length <550mm (national standard ≤0.5mm).
2. Axial Displacement: ≤0.4mm under 500N axial pressure (national standard ≤0.7mm).
3. Noise: 40-45dB during no-load operation (national standard ≤55dB), realizing silent working conditions.
4. Sealing Performance: Water inflow ≤100g after 72 hours of water immersion (national standard ≤150g), waterproof and dustproof.
5. Rotation Resistance: ≤2N under 250N radial pressure (national standard ≤3N), low energy consumption.
6. Service Life: ≥50,000 hours, suitable for long-distance, heavy-duty and complex working conditions.

Pulleys

Pulleys are divided into driving pulleys, bend pulleys and tension pulleys, which are key components for power transmission and belt guidance.

• Driving Pulley: Transmits power, with a rubber-coated surface to enhance friction and prevent slipping.
• Bend Pulley: Changes the running direction of the conveyor belt, adapting to the overall layout of the equipment.
• Tension Pulley: Cooperates with the tension device to maintain constant tension of the conveyor belt.

ZOOMRY Technical Advantages

1. Shaft Material: 40Cr rolled material for shafts with diameter ≤190mm, 40Cr forged material for shafts with diameter ≥200mm, high strength and no deformation.
2. Shell Processing: CNC four-roll rounding, plate thickness 30mm, ovality <1.5mm, ensuring stable operation.
3. Quality Control: Ultrasonic testing + tempering for stress relief after welding, free of cracks and stress concentration.
4. Service Life: ≥50,000 hours, matching the service life of idlers and reducing downtime for replacement.

Conveyor Belt

The conveyor belt is the "muscle" of the equipment, undertaking the dual functions of material bearing and power transmission.

• Materials: Rubber, nylon, polyester, steel cord core, adapted to wear-resistant, high-temperature resistant, oil-resistant, flame-retardant and other working conditions.
• Special Models: Foldable conveyor belt for Pipe conveyors, ensuring no rebound and no material leakage after forming.
• Selection Points: Selected according to material hardness, temperature, corrosiveness, conveying capacity and inclination; ZOOMRY provides full-specification customization services.

Drive System

The drive system is the power source of the conveyor, determining the conveying capacity, speed and stability.

• Composition: Motor, reducer, coupling, hydraulic power unit (for mobile models).
• Configuration: International brand gear motors such as SEW, FLENDER and JIE are optional, suitable for high-power and heavy-duty conveying demands.

ZOOMRY Advantage: Mobile models are equipped with on-board diesel generator sets, enabling operation without external power, ideal for remote mining areas and ports.

Tension Device

It keeps the conveyor belt at a constant tension during operation to prevent slipping, deviation and sagging. Common types include screw tension, hydraulic tension and heavy hammer tension. Hydraulic automatic tension is preferred for long-distance systems, featuring stable tension and fast response.

Safety Protection Devices

1. Deviation Switch: Detects belt deviation and triggers automatic alarm/shutdown.
2. Pull Cord Switch: Emergency shutdown with full coverage, ensuring personal safety.
3. Anti-falling Protection: Double mechanical limit for mobile telescopic models, locking within 0.01 seconds in case of rope breakage/power failure to prevent falling.
4. Overload Protection: Automatic shutdown in case of motor overload or material jamming, protecting core components.
5. Temperature/Smoke Monitoring: Fire prevention early warning, suitable for coal and chemical scenarios.

Cleaning System

Prevents materials from sticking to the belt and pulleys, prolongs component service life and reduces maintenance workload:

• Main polyurethane (PU) cleaner at the head and PU cleaner at the tail, suitable for inner and outer belts.
• Optional brush cleaner, with a cleaning rate of 99%, no material residue and no belt damage.

Frame and Chassis

• Fixed Models: Lattice steel structure, high strength and lightweight, reducing civil engineering costs.
• Mobile Models: Track/tire chassis with hydraulic lifting, adapted to soft foundations, steep slopes and narrow wharves.
• ZOOMRY: The frame is made of high-quality carbon steel with reinforced key stress points, complying with CEMA, GB and AS standards.

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Ⅳ.Application Scenarios of ZOOMRY Equipment

Pipe Belt Conveyor

• Core Advantages: Fully enclosed, large turning angle, small footprint, capable of crossing residential areas, roads and tunnels.
• Application: Projects with high environmental protection requirements, complex terrains and long-distance conveying.

Radial Telescopic Stacker

• Core Advantages: Rotation + telescopic movement + luffing, stacking capacity increased by 28%, reducing material segregation and pollution.
• Parameters: Belt width 800-1600mm, conveying capacity 500-3000m³/h, maximum stacking height 20 meters.
• Application: Ports, mines, sand-gravel yards, cement raw material yards.

Mobile Ship Loader

• Core Advantages: Adaptable to all ship types such as barges, Handysize and Panamax, with strong space adaptability.
• Application: Bulk cargo terminals, coastal and riverine loading and unloading operations.

Heavy Duty Hopper Feeder

• Core Advantages: Extra-large 8.8m³ hopper, maximum processing capacity of 3500TPH, resistant to loader impact.
• Application: Transshipment of heavy-duty materials such as iron ore, concentrate, sand-gravel and coal.

Truck Unloader

• Core Advantages: Optional 2/4 lanes, wheeled/tracked type, conveying capacity 200-1800TPH.
• Application: Rapid truck unloading in quarries, ports and mining areas.

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Ⅴ.Choose ZOOMRY

1. Full-process EPC+M+O Service: Provides integrated solutions covering design, manufacturing, installation, operation, maintenance and transformation. It has a number of experienced engineering teams, specializing in complex terrains, steep inclinations, cross-sea and tunnel-crossing projects, and is a core supplier of long-distance overland conveying systems in China.
2. Strict Quality Control: Self-built testing center including chemical laboratory, hardness laboratory, idler laboratory and mechanical performance testing laboratory, equipped with more than 60 sets of testing equipment. Products have passed ISO9001, ISO14001, CEMA, CE, EAC and KCS certifications, complying with European, American, Russian and Korean standards.
3. Self-research and Self-sufficiency of Core Components: Core components such as idlers and pulleys are independently produced, with controllable quality, lower cost and faster delivery, avoiding the shortcomings of outsourced components.
4. Customization and Modularization: Parameters can be customized according to customer working conditions. Mobile models can be packed into 40ft HQ containers for convenient global transportation, and on-site assembly only takes 10-20 days.
5. Intelligence and Safety: All series support PLC automatic control, HMI touch screen operation and remote control, with triple safety protection, reaching the level of international first-tier brands.

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Ⅵ.Key Points for Belt Conveyor Selection and Operation & Maintenance

Core Selection Factors

1. Material Characteristics: Particle size, density, humidity, corrosiveness, angle of repose.
2. Process Parameters: Hourly conveying capacity, conveying distance, inclination angle, turning radius.
3. Working Environment: Temperature, altitude, site size, environmental protection requirements.
4. Standard Selection: International standards such as CEMA, GB, AS and CE.

Key Points for Operation & Maintenance

1. Regularly check the operation of idlers and pulleys, and replace damaged parts in a timely manner.
2. Maintain moderate tension of the conveyor belt to prevent slipping and deviation.
3. Ensure the normal operation of the cleaning system to reduce wear caused by material sticking.
4. Regularly maintain the hydraulic system, chassis and engine of mobile models.

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As the core equipment for global bulk material conveying, belt conveyors have evolved from traditional fixed equipment into intelligent, green, mobile and customized integrated systems. Their core value lies in high efficiency, low cost and environmental protection, and the performance of the equipment directly depends on the design of the working principle and the quality of the core components.

With more than 20 years of deep cultivation in the belt conveyor field, ZOOMRY provides reliable bulk material conveying solutions for global mining, port, cement, coal, metallurgy and other industries with international standards, self-developed technology and full-life cycle services, and is a representative brand of Chinese manufacturing going global. In the future, ZOOMRY will continue to focus on technological innovation, create greater value for customers, and promote the bulk material conveying industry to develop in a more intelligent, greener and more efficient direction.